Lineman s wire-grip



1N0 Model.)

0. A. svmrsson. I 'LINEMANS WIRE GRIP.

Patented Apr. 25, 1893.

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UNITED STATES PATENT @rrron.

CLAES A. SVENSSON, OF BUFFALO, NEW YORK.

LINEMANS WIRE-GRIP.

SPECIFICATION forming part of Letters Patent No. 496,104, dated April25, 1893.

Application filed October 28,1892.

To all whont it may concern.-

Be it known that I, CLAES A. SvENssoN, a citizen of the United States,residing at Buffalo, in the county of Erie and State of New York, haveinvented a new and useful Improvementin Linemens Wire-Grips, of whichthe following is a specification.

My invention relates more particularly to the class of clamps orgrippers known as come alongs and which are used by linemen forstretching telephoneand telegraph wires.

The object of my invention is the production of a powerful andconvenient device of this character which affords an extensive bearingsurface to the wire and which exerts a uniform pressure upon the samefrom end to end of the jaws, thus preventing marring or bending of theclamped wire.

In the accompanying drawings:Figure 1 is a side elevation of my improvedgrip showing the position of the parts when the jaws are open. Fig. 2 isa similar view, showing the position of the parts when the jaws areclosed. Fig. 3 is a longitudinal section of the device in line 3-3, Fig.2. Fig. 4 is a cross section .of the same in line 4-4, Fig. 2. Fig. 5 isa similar section in line 55, Fig. 2.

Like letters of reference refer to like parts in the several figures.

A represents the body or main member of the grip. The inner edge A ofthe front portion of the body A forms the stationary jaw of the grip.

B is a movable jaw arranged opposite the stationary jaw A and connectedto the body A by parallel links or arms 0, so as to mainmin a positionparallel with the face of the stationary jaw. The connecting links 0 arepreferably arranged at or near opposite ends of the movable jaw, asshown, and are pivoted at their lower ends to the body A and at theiropposite ends to the movable jaw by transverse pins or rivets.

D is an actuating lever fulcrumed between its ends upon the body A, asshown at d, and ivoted with its short arm to the movable jaw, as shownat 01', so that upon swinging the lever in one or the other direction,the movable jaw is moved toward or from the stationary jaw, thus closingor opening the jaws.

Serial No. 450,253. (No model.)

E is a draft loop or attachment arranged to slide lengthwise upon therearportion of the body member A, and F is a coupling bar orlinkconnecting the long arm of the actuating lever with the draft loop,so as to transmit the movement of the loop to the lever. This draft loopis provided with a transverse pin g which passes through and is guidedin a longitudinal slot it formed in the rear portion of the body memberA, the pin g being preferably provided with a roller g, as shown inFigs. 3 and 5,to reduce friction. To the draft loop is attached theusual tension or stretching strap, which latter is not shown in thedrawings. The long arm of the actuating lever is preferably offset orraised to the plane of the body member A, as shown in Fig. 4, and theconnecting bar is composed of two members arranged on opposite sides ofthe body member A and the actuating lever.

In order to open the jaws of the grip for inserting the wire, the draftloop is pushed forward on the body A, toward the jaws, as shown in Fig.1, which causes the actuating lever to be swung on its pivot in theproper direction to move the movable jaw away from the stationary jaw.Upon inserting the wire, the draft or rearward pull on the loop causesthe long arm of the actuating lever to swing rearward through the mediumof the connecting bar and its short arm forward, thereby closing themovable jaw against the interposed wire, as shown in Fig. 2. As themovable jaw is pivotally connected with the body member A by parallellinks, its face is always comp'elled to stand parallel with the face ofthe stationary jaw, no matter whether a large or a small' sized wire isgripped, thus exerting an even pressure upon the wire throughout thelength of the jaws and avoiding cutting or bending of the wire.

I is a retaining plate arranged on one of the jaws of the grip andadapted to be extended across the space between the jaws after the wirehas been inserted, so as to hold the same in place, preparatory tostretching it. This retaining plate consists of a rotary disk preferablyjournaled upon the outer pivot d of the lever and which is cut away onone side, flush with the face of the movable jaw, as shown at i, so thatupon turning the disk into the position shown in Fig. 1, the wire can beinserted between the jaws, while upon turning it out of this position,as shown in Fig. 2, it bridges the space vbetween the jaws and overlapsthe wire, thereby preventingthe wire from leaving the jaws when adjustedbetween the same. The edge of the rotary retaining disk is preferablymilled to facilitate turnlng it.

As an additional means of holding the inserted wire in position betweenthe jaws, the rear portions of the double connecting bar F are extendedlaterally beyond that side of the body member A on which the movable jawis arranged, as shown at f, so as to form stops or projections betweenwhich is confined the portion of the wire extending rearwardly from thejaws.

I claim as my invention-'- 1. The combination with the body or mainmember of the grip carrying a stationaryjaw, of a movable jaw arrangedopposite the stationary jaw, links connecting the movable jaw with thebody or stationary jaw, an actuating lever fulcrurned upon the body andpivoted to the movable jaw, a draft loop or attachment movablelengthwise on the body, and a coupling bar connecting the lever withsaid loop, substantially as set forth.

2. The combination with the body or main member of the grip provided atitsfront portion with a stationary jaw and in its rear portion with alongitudinal slot, of a movable jaw arranged opposite the stationary jawand pivotally connected with the latter by par-.

allel links, an actuating lever fulcru med upon the body and pivotedwith one of its arms to the movable jaw, a draft loop having a pinguided in the slot of the body, and a bar connecting the other arm ofthe actuating lever with the draft loop, substantially as set forth.

3. The combination with the body member of the grip having a stationaryjaw, and the movable jaw co-operating with the stationary jaw, of theactuating lever of the movable jaw, the longitudinally movable draftloop, and a coupling bar connecting the actuating lever with the draftloop and having its rear ends extended laterally beyond said bodymember, forming a stop or projection which confines the adjacent portionof the wire placed in the grip, substantially as set forth.

Witness my hand this 24th day of October,

CLAES A. SVENSSON. Witnesses:

J NO. J. BONNER, FRED. C. GEYER.

